2. Description of the Barracuda
The Multi-Purpose Detector (MPD)
2012-10/4.3A
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Barracuda & QABrowser Reference Manual
filtration cannot be automatically estimated, a "standard" HVL measurement may be
required. All measured kVp and dose values measured with the MPD are automatically
compensated for the actual beam quality. This means that no manual corrections of
measured data is needed.
The MPD utilizes a completely new technology using several detectors and filters to
measure. No manual filter changes are required since the filters are located inside the
MPD and moved by commands from the handheld computer or the PC. A range
indicator is visible on the edge at the top of the MPD. A number corresponding to each
filter is shown, and this number is also used in the QABrowser and oRTIgo to identify
different ranges. This indicator can be used to verify the mechanical function of the
MPD.
The active detector area is marked by a white rectangle on the top panel of the MPD.
The minimum X-ray field that can be used is 3×21 mm. The actual width of the detector
is 2.7 mm. The detector surface is 8 mm below the surface, as indicated by the lower
edge of the range indicator opening. The MPD has a special Check function to verify
the position of the MPD and compensate for small mis-alignments or inhomogenities.
The MPD is very sensitive and can measure at very low output from the X-ray tube.
The MPD connects to the MPM in the cabinet via a 2 m cable (an optional 6 m cable is
available). The normal way to work with the Barracuda is to place the cabinet and the
MPD close to the tube inside the X-ray room. The handheld computer or PC is
connected with a long cable and placed in the control room together with the user.
Setting Up the Barracuda for the First Time2.4
Before you use your Barracuda for the first time, please do the following:
· Mount the batteries.
· Attach the external power supply.
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